685794910579 has 8 divisors (see below), whose sum is σ = 691170976368. Its totient is φ = 680424211200.

The previous prime is 685794910501. The next prime is 685794910631. The reversal of 685794910579 is 975019497586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 685794910579 - 2¹⁷ = 685794779507 is a prime.

It is a super-2 number, since 2×685794910579² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685794911579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1084822 + ... + 1596379.

It is an arithmetic number, because the mean of its divisors is an integer number (86396372046).

Almost surely, 2^685794910579 is an apocalyptic number.

685794910579 is a deficient number, since it is larger than the sum of its proper divisors (5376065789).

685794910579 is a wasteful number, since it uses less digits than its factorization.

685794910579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683205.

The product of its (nonzero) digits is 171460800, while the sum is 70.

The spelling of 685794910579 in words is "six hundred eighty-five billion, seven hundred ninety-four million, nine hundred ten thousand, five hundred seventy-nine".